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Calcium stannate europium luminescence material having hollow structure, and preparation method thereof

A technology of luminescent materials and hollow structures, applied in the direction of luminescent materials, chemical instruments and methods, etc., can solve the problems of inconsistent powder particle size, low luminous intensity of fluorescent powder, high energy consumption of high temperature reaction, etc. The effect of low cost and few process steps

Inactive Publication Date: 2014-07-16
OCEANS KING LIGHTING SCI&TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Most of the current commercial luminescent materials are prepared by high-temperature solid-phase method. The high-temperature reaction consumes a lot of energy and the particle distribution is uneven. And the particle size of the powder is inconsistent, the shape is incomplete, resulting in uneven coating
People prepare phosphors by using sol-gel method, hydrothermal synthesis method, complex gel method and other methods. These methods can make up for the deficiency of high-temperature solid-phase synthesis method, but the luminous intensity of phosphor powder obtained by these methods is not as high as high temperature solid phase synthesis

Method used

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  • Calcium stannate europium luminescence material having hollow structure, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Precipitation method to prepare Ca with hollow structure 1.95 SnO 4 :Eu 0.05

[0027] Weigh 4g of glucose and dissolve it in absolute ethanol to obtain 40mL of glucitol solution, transfer this solution into a 50mL reaction kettle with a polytetrafluoroethylene liner, cover it and tighten it, and react at 120°C for 36h to prepare carbon small The sphere solution was centrifuged to obtain a solid phase, washed twice with deionized water and absolute ethanol, and dried at 60°C to obtain a carbon sphere template.

[0028] According to Ca 1.95 SnO 4 :Eu 0.05 The stoichiometric ratio measures 1.56mL5mol / L Ca(CH 3 COO) 2 solution, 4mL 0.05mol / L Eu(CH 3 COO) 3 solution and 40mL0.1mol / L SnCl 4 The solution was placed in a beaker, and then 480mg of carbon pellet template was added, heated in a water bath at 50°C, and stirred for 2h. Then slowly add 10mL1mol / L sedimentation agent ammonium oxalate (NH 4 ) 2 C 2 o 4 The solution was kept in a water bath at 50°C for 6h...

Embodiment 2

[0031] Precipitation method to prepare Ca with hollow structure 1.98 SnO 4 :Eu 0.02 :

[0032]Weigh 0.05g of sucrose and dissolve it in absolute ethanol to obtain 40mL of sucrose alcohol solution, transfer the solution into a 50mL reaction kettle with Teflon lining, cover and tighten it, and react at 160°C for 20h to prepare carbon The bead solution was centrifuged to obtain a solid phase, washed three times with deionized water and absolute ethanol, and dried at 80°C to obtain a carbon bead template.

[0033] According to Ca 1.98 SnO 4 :Eu 0.02 The stoichiometric ratio measures 7.92mL1mol / L Ca(NO 3 ) 2 solution, 8mL0.01mol / L Eu(NO 3 ) 3 solution and 8mL0.5mol / L SnCl 4 The solution was placed in a beaker, and then 4.8mg of carbon pellet template was added, heated in a water bath at 80°C, and stirred for 0.5h. Then slowly add 10mL1mol / L sedimentation agent ammonium oxalate (NH 4 ) 2 C 2 o 4 The solution was kept in a water bath at 80°C for 6h. Filter, wash, and ...

Embodiment 3

[0036] Precipitation method to prepare Ca with hollow structure 1.99 SnO 4 :Eu 0.01 :

[0037] Weigh 0.003g of glucose and dissolve it in absolute ethanol to obtain 40mL of glucitol solution, transfer this solution into a 50mL reaction kettle with a polytetrafluoroethylene liner, cover and tighten it, and react at 150°C for 10h to prepare carbon The bead solution was centrifuged to obtain a solid phase, washed twice with deionized water and absolute ethanol, and dried at 70°C to obtain a carbon bead template.

[0038] According to Ca 1.99 SnO 4 :Eu 0.01 The stoichiometric ratio measures 7.96mL1mol / L Ca(NO 3 ) 2 solution, 8mL0.005mol / L Eu(NO 3 ) 3 solution and 4mL1mol / L SnCl 4 The solution was placed in a beaker, and then 200mg of carbon pellet template was added, heated in a water bath at 60°C, and stirred for 1h. Then slowly add 20mL0.5mol / L sedimentation agent ammonium oxalate (NH 4 ) 2 C 2 o 4 The solution was kept in a water bath at 60°C for 3h. Filter, was...

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Abstract

The invention belongs to the field of luminescence materials, and discloses a calcium stannate europium luminescence material having a hollow structure, and a preparation method thereof, wherein the structure general formula of the luminescence material is Ca2-xSnO4:Eux, and x is more than 0 and is less than or equal to 0.05. According to the calcium stannate europium luminescence material having the hollow structure, the dispersed carbon spheres are adopted as the template so as to obtain the hollow structure having the spherical calcium stannate europium, such that the morphology can be controlled, and the luminescence efficiency is enhanced.

Description

technical field [0001] The invention relates to the field of luminescent materials, in particular to a calcium stannate europium luminescent material with a hollow structure and a preparation method thereof. Background technique [0002] Most of the current commercial luminescent materials are prepared by high-temperature solid-phase method. The high-temperature reaction consumes a lot of energy and the particle distribution is uneven. And the particle size of the powder is inconsistent, and the shape is incomplete, resulting in uneven coating. People prepare phosphors by using sol-gel method, hydrothermal synthesis method, complex gel method and other methods. These methods can make up for the deficiency of high-temperature solid-phase synthesis method, but the luminous intensity of phosphor powder obtained by these methods is not as high as high temperature Solid Phase Synthesis. Obtaining luminescent materials with controllable size and shape and good luminescent perfor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/66
Inventor 周明杰王荣
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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